The Systematic Development of X Ray Plates And Films
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In our eReader you can find the full English version of the book. Read The Systematic Development of X Ray Plates And Films Online - link to read the book on full screen. Our eReader also allows you to upload and read Pdf, Txt, ePub and fb2 books. In the Mini eReder on the page below you can quickly view all pages of the book - Read Book The Systematic Development of X Ray Plates And Films
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Heat increases the chemical action and cold retards, so it is obvious that for uniform results the developer should always be kept at a certain definite temperature. Experience has proved that most develop- ing agents work best at a temperature of 65 F. A cold developer will produce thin negatives, lacking in detail, whereas a warm developer will produce a heavy, flat quality without proper gradation. Hydrochinon prac- tically ceases to work below 60 F.
The simplest way to maintain a uniform te...mperature has already been described in the paragraph dealing with the ' ' unit ' ' system of tank manipulation. Water of the proper temperature is allowed to circulate freely around the tanks at all times, the temperature of the water being controlled by combination hot and cold water faucets. During the summer months the cold tap water will often be found at the correct temperature, but where this condition does not obtain ice should be added.
The ideal method of maintaining a uniform tempera- ture is to employ a so-called "constant temperature 58 DEVELOPMENT OF X-EAY PLATES AND FILMS bath.
What to read after The Systematic Development of X Ray Plates And Films?
You can find similar books in the "Read Also" column, or choose other free books by Lehman Wendell to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
Heat increases the chemical action and cold retards, so it is obvious that for uniform results the developer should always be kept at a certain definite temperature. Experience has proved that most develop- ing agents work best at a temperature of 65 F. A cold developer will produce thin negatives, lacking in detail, whereas a warm developer will produce a heavy, flat quality without proper gradation. Hydrochinon prac- tically ceases to work below 60 F.
The simplest way to maintain a uniform te...mperature has already been described in the paragraph dealing with the ' ' unit ' ' system of tank manipulation. Water of the proper temperature is allowed to circulate freely around the tanks at all times, the temperature of the water being controlled by combination hot and cold water faucets. During the summer months the cold tap water will often be found at the correct temperature, but where this condition does not obtain ice should be added.
The ideal method of maintaining a uniform tempera- ture is to employ a so-called "constant temperature 58 DEVELOPMENT OF X-EAY PLATES AND FILMS bath.
What to read after The Systematic Development of X Ray Plates And Films?
You can find similar books in the "Read Also" column, or choose other free books by Lehman Wendell to read onlineMoreLess
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